Savannah morning news. [volume] (Savannah) 1868-1887, 1887-03-28
POPULAR SCIENCE.

Charming effects are obtanable on panel
by drawing tracery of conventional
flowers or leaves and tintlng them in rich,
sober colors in imitation of inlaid wood
work.
Sycamore wood forms the best ground
to work on owing to its fine surface, pow
dered French chalk or a wash OF gelatine
dissolved In hot water being good prep
aration for the touched of the paint brush.
Looking glasses, small tables, fancy
chairs and glove boxes can be Ornamented
and have, when accumulated with dark
brown or black outline to the design and
subsequently polished, all the appearance
OF variegated woods.
French physicians claim to have found
out by experiments upon rabbits that tu-
berculosis may be cured by the admins
tration Of tannIn. Over fifty cases Of
phthisis have been treated by giving tan
min in doses Of from two to four grams
daily, and Improvement was perceptible
in two weeks, the patients increasing il
weight.
Parafine has a higher resistance than
mica, gutta percha or shellac. Even when
not subjected to mechanical strains it be-
comes cracked, though the openings are
not visible TO the eye. The insulating
power becomes lessened, especially If it
be IN contact with water. OF all the va
rIeties that ore sold under the name Of
paraffine only that which has the highest
boiling point and is clear and hard should
be used.
Bruises may be taken out of the wood
WORK OF scientific instruments by wetting
with water. Then lay on the place brown
paper about five layers thick and apply a
hot flatiron until the moisture be evapO-
rated. Ii the brulse be not gone repeat
the process. If the bruise be small,
merely soak it with warm water ard APP
ply o red-hOt poker very near the surface.
Keep the wood wet and in a few minutes
the bruse will disappear.
The true marine glue is composition
OF shelIac and India rubber, in proper
tions which vary according to tho pur-
pose for which the cement is TO be used
The degree OF softness is regulated by the
proportion of benzine used for dissolvlng
the India rubber. When only small
quantity is needed the following recipe
may be followed: Dissolve part of India
rubber in II parts OF benzine, and to the
solution add 20 parts of powdered shellac,
heating the mixture cautiously over q fire.
Apply with a brush. Wooden cells for
primary or secondary battery are made
tight and acid proof by this compound.
A soft alloy Tor soldering articles that
Will not stand a higher temperature, such
as glass or porcelain, may be made from
the following recipe; Copper dust, OBJ
tanned by precipitation from solution Of
the sulphate by means of zinc, is mixed
with strong sulphuric acid, specific gray
ity 1.S5, IN a cast-iron or porcelaln-lined
mortar. From twenty to thirty-six parts
of the dust are used, according to the de-
sired hardness. To this cake there are
stirred in seventy parts Ofmercury. When
we'll mixed the amalgam is carefully
rinsed with warm water to remove the
acid and then set aside to cool. In ten
or twelve hours 1t is hard enough to
scraech tin, ana il 1t IS 10 be used now II
must be heated so hot that when worked
over in mortar 1T becomes as soft as
wax. In this form IL can be spread out
on any surface, to which it adheres with
great tenacity when 1t gets cold and hard
1t is asserted by some Of isSuuinSe t
medical authorities that0Ilns-Water ana
milk are not only food and medicine at an
early period OF life. but also at later,
when, as IN the case OF infants, the func-
tons OF digestion and assimilation are
feeble and easily perverted. IL IL found
that a stomach taxed by Zluttony, irri-
tated by improper food, intlamed by alco-
bol, enieebled by disease Or,otherwlse un-
fitted Tor its duties-as is shown by the
various symptoms attendant upon midi
gestlOn, uyspcpei". uidi hOh"' u!seHJeIS
and iever-will resume IFS work, aud do
it energetlcally, on an exclusive diet OF
bread and milk and lime-water. A goblet
of cows milk may have four tablespoon
fuls Of lime-water added to II with good
effect; the lime-water may be made by
putting few Jumps OF unslaked lime
into stone jar and ac1ing water until
the lime is slaked ana OF about the con.
slstence of thick cream-the lime settling
and leaving the pure and clean lime
,uatar an Tho fOn